Science: Second Moon?

Astronomer Clyde Tombaugh, who spotted the planet Pluto (1930), is
looking for a nearer and even more elusive object: a second satellite
of the earth. Since he refuses to give details and refers questioners
to Army Ordnance-in Washington, it is fair to assume that the famous
rocket-men who work for Army Ordnance are interested in the project.
They may want merely to know what opposition from nature their rockets
are apt to encounter when they climb deep into space. Or they may have
a more ambitious interest: a nearby, natural satellite might be a more
convenient base in space than the...